I need to replace the lifters in my 96 HP 500. Does anybody have the part numbers? The Gen 6 have rollers but the Gen 5 have flat tappet, is this correct? I'm going to go ahead and swap out the valve springs again as well, any other info for on what all I'll need for these parts for this job parts wise would be very thankful!

Thanks

P.S. Is there an easy way to tell between a Gen 5 and 6 ?

All HP500's had roller cams and lifters.